Death cube [Roblox Script]

--This is needs to be in a local script
local player = game:GetService('Players').LocalPlayer
local char = player.Character
local mouse = player:GetMouse()

--Beam source
local b = Instance.new('Part')
b.Parent = game.Workspace
b.Size = Vector3.new(10,10,10)
b.CanCollide = false
b.Name = 'Cube'
b.Color = Color3.new(BrickColor.White(255,255,255))
b.Locked = true
--thrust
local rok = Instance.new('BodyPosition')
rok.Parent = b
rok.MaxForce = Vector3.new(math.huge,math.huge,math.huge)
rok.P = 9999
b.BodyPosition.Position = Vector3.new(char.Torso.Position.X,15,char.Torso.Position.Z)

b.Material = 'Neon'

mouse.Button1Down:connect(function (clickdown)



		local ray = Ray.new(b.CFrame.p, (mouse.Hit.p - b.CFrame.p).unit * 300)
		local part, position = workspace:FindPartOnRay(ray, player.Character, false, true)

		local beam = Instance.new("Part", workspace)
		beam.BrickColor = BrickColor.new("Really black")
		beam.FormFactor = "Custom"
		beam.Material = "Neon"
		beam.Transparency = 0
		beam.Anchored = true
		beam.Locked = true
		beam.CanCollide = false
 		beam.Name = 'b09'
		local distance = (b.CFrame.p - position).magnitude
		beam.Size = Vector3.new(3, 3, distance)
	mouse.Target.Anchored = true
	if mouse.Target.Name ~= 'Base' then
	print(mouse.Target.Name)
	mouse.Target:Destroy()
end



		while true do

		local ray = Ray.new(b.CFrame.p, (

			mouse.Hit.p - b.CFrame.p).unit * 300)
		local distance = (b.CFrame.p - position).magnitude
		beam.Size = Vector3.new(3, 3, distance)
		beam.CFrame = CFrame.new(b.CFrame.p, position) * CFrame.new(0, 0, -distance / 2)
	wait()

end



	end)
mouse.Button1Up:connect(function (clickup)
	game.Workspace.b09:Destroy()

end)

while true do

	b.BodyPosition.Position = Vector3.new(char.Torso.Position.X,15,char.Torso.Position.Z)


	wait(.1)
end